Acoustic logging device and acoustic logging method for eliminating seismic source signal interference

Abstract

The invention discloses an acoustic logging device and method for eliminating seismic source signal interference, and belongs to the technical field of acoustic logging. The acoustic logging device comprises a cover plate and a logging instrument; the upper side of the cover plate is fixedly connected with a silencing plate and a handle; the surface of the silencing plate is designed to be honeycomb-shaped; the lower side of the cover plate is fixedly connected with an elastic pad and a combination cylinder; the lower side of the combining cylinder is fixedly connected with a connecting seat; the logging instrument is arranged below the cover plate; the upper end of the logging instrument is fixedly connected with a connecting column, and the connecting column is inserted into the connecting seat and is in threaded connection with the connecting seat; the cover plate and the logging instrument are designed to be in a split type, transportation and carrying are convenient, the cover plate and the logging instrument can be automatically installed when used, the installation process is simple and reliable, controllability of seismic source signal interference elimination is achieved through mutual cooperation of the elastic pad and the silencing plate, the logging instrument is suitable for various measurement environments, interference of environmental noise on sound wave emission and receiving is effectively reduced, and the logging instrument is suitable for being popularized and used. And the measurement precision of acoustic logging is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of acoustic logging, in particular to an acoustic logging device and an acoustic logging method for eliminating interference of seismic source signals. Background Art

[0002] Acoustic logging is a geophysical logging technology. When sound waves pass through the formation, different types of rocks and fluids will affect the propagation speed of the sound waves. Based on this measurement method, the physical properties of underground rocks can be obtained, thereby analyzing the geological layers. It is widely used in fields such as oil and natural gas exploration and groundwater resource assessment.

[0003] A Chinese patent application CN209818057U discloses an acoustic logging instrument, the technical solution of which is as follows: it includes an acoustic shell and an acoustic capsule, the acoustic shell is provided with a through hole, the acoustic capsule is arranged in the acoustic shell, and the acoustic logging instrument also includes an elastic protective net, the elastic protective net is located between the acoustic capsule and the acoustic shell, and the elastic protective net is coated on the acoustic capsule. This technology can expand synchronously with the acoustic capsule when the acoustic capsule expands by coating the elastic protective net on the acoustic capsule. On the one hand, it can protect the part of the acoustic capsule extending from the through hole to prevent the acoustic capsule from being scratched or cracked by foreign objects; on the other hand, since the elastic protective net is coated on the entire acoustic capsule, it can control the entire acoustic capsule to a certain extent when the acoustic capsule expands to prevent the part of the acoustic capsule facing the through hole from expanding too much. In addition, the elastic protective net has mesh holes, which will not affect the emission and reception of sound waves.

[0004] However, the above technology has the following defects: the existing logging equipment is set inside a pre-dug measuring well when in use, and various external noises are likely to interfere with the source signal. For example, human activities, insect and bird chirping, water flow, wind and rain will all produce certain noises, which will affect the emission and reception of sound waves, thereby reducing the measurement accuracy of acoustic logging. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art, the present invention provides an acoustic logging device and an acoustic logging method for eliminating interference of seismic source signals, and solves the technical problems raised in the background technology.

[0006] The technical solution adopted by the present invention to solve its technical problems is: the acoustic logging device for eliminating interference of seismic source signals of the present invention comprises a cover plate and a logging instrument, the logging instrument internally comprises a signal transmitting module, a signal receiving module and a data processing module; a silencer plate and a handle are fixedly connected to the upper side of the cover plate; the surface of the silencer plate is designed to be honeycomb-shaped; an elastic pad and a coupling tube are fixedly connected to the lower side of the cover plate; a connecting seat is fixedly connected to the lower side of the coupling tube; the logging instrument is arranged below the cover plate; a connecting column is fixedly connected to the upper end of the logging instrument, and the connecting column is inserted into the inside of the connecting seat and threadedly connected thereto.

[0007] Preferably, a movable wheel is provided inside the coupling cylinder; a group of protrusions are evenly distributed on the side of the movable wheel; an adjusting rod is fixedly connected to the upper side of the movable wheel, and the adjusting rod passes through the cover plate and is threadedly connected thereto; a handwheel is fixedly connected to the upper end of the adjusting rod; a group of protruding rods are evenly distributed on the side of the coupling cylinder, and the protruding rods pass through the side wall of the coupling cylinder and are slidably connected thereto; an arc block is fixedly connected to one end of the protruding rod close to the movable wheel; a fitting plate is fixedly connected to the other end of the protruding rod; a spring is fixedly connected between the fitting plate and the coupling cylinder.

[0008] Preferably, a group of convex thorns are evenly distributed on one end of the bonding plate away from the outrigger rod.

[0009] Preferably, the interior of the elastic pad is designed to be hollow; an elastic air storage block is fixedly connected to the interior of the coupling cylinder below the movable wheel; the interior of the elastic pad and the air storage block are connected to each other through an air pipe.

[0010] Preferably, a volatilization box is fixedly connected to the upper side of the cover plate; irritating volatile substances are added inside the volatilization box; and a group of openings are evenly distributed on the upper side of the volatilization box.

[0011] Preferably, a control ring is fixedly connected inside the opening; a pressure plate is provided on the upper side of the control ring; a sealing sleeve is fixedly connected inside the control ring; a push rod is slidably and sealingly connected inside the sealing sleeve; an elastic part is provided between the push rod and the sealing sleeve; the sealing sleeve and the air storage block are connected to each other through air pipe 2.

[0012] Preferably, a heat exchange tube is provided at the bottom of the volatilization box; an elastic heat dissipation sleeve is provided on the outside of the logging instrument; the heat dissipation sleeve and the heat exchange tube are connected to each other through a conduit; and coolant is stored in the heat dissipation sleeve, the conduit and the heat exchange tube.

[0013] Preferably, the heat exchange tube is designed to be wavy.

[0014] A sonic logging method for eliminating interference from seismic source signals, the method adopts the above-mentioned sonic logging device for eliminating interference from seismic source signals, and comprises the following steps:

[0015] S1: Screw the connection column of the logging instrument into the connection seat of the cover plate to install the logging instrument and the cover plate, then place the cover plate at the wellhead and put the logging instrument into the well;

[0016] S2: Turn the adjusting rod by hand wheel to drive the movable wheel to rotate inside the coupling cylinder and move downward, and use the convex block to squeeze the arc block to push out the multiple extension rods, so that the bonding plate is pressed against the well wall surface;

[0017] S3: The movable wheel squeezes the air storage block, and the gas inside the air storage block is squeezed into the elastic pad through the air pipe 1, so that the elastic pad is inflated and the gap between the elastic pad and the ground is sealed;

[0018] S4: Start the logging tool to perform acoustic logging;

[0019] S5: The irritant in the volatilization box evaporates outward through the opening and diffuses into the surrounding environment, dispersing nearby animals and preventing animal activities from interfering with the acoustic logging work or damaging the equipment;

[0020] S6: The coolant inside the heat dissipation sleeve absorbs the heat generated by the logging instrument to cool down the electrical components inside the logging instrument. The coolant transfers the heat to the irritating substance inside the volatilization box through the heat exchange tube, thereby reducing the temperature of the coolant and accelerating the volatilization speed of the irritating substance.

[0021] The beneficial effects of the present invention are as follows:

[0022] 1. The present invention designs the cover plate and the logging instrument to be split, which is convenient for transportation and carrying. It can be installed by itself when in use, and the installation process is simple and reliable. By arranging the elastic pad and the silencer plate to cooperate with each other, the controllability of the source signal interference elimination is achieved. It is suitable for a variety of measurement environments, effectively reduces the interference of environmental noise on the transmission and reception of sound waves, and improves the measurement accuracy of acoustic logging.

[0023] 2. After the cover plate and the logging instrument are placed in place, the present invention rotates the adjusting rod through the hand wheel to drive the movable wheel to rotate inside the coupling tube and move downward, and then utilizes the convex block on the surface of the movable wheel to squeeze the arc block, and pushes multiple protruding rods outward at the same time, so that the fitting plate is pressed tightly against the surface of the well wall, thereby achieving fixation between the device and the measuring well, and keeping the logging instrument centered, thereby improving the use effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a stereogram of the present invention;

[0025] Figure 2 It is a schematic diagram of the internal structure of the coupling cylinder in the present invention;

[0026] Figure 3 It is a schematic diagram of the structure of the volatilization box and the heat dissipation sleeve in the present invention;

[0027] Figure 4 is a cross-sectional view of the present invention;

[0028] Figure 5 yes Figure 4 A partial enlarged view of the middle part;

[0029] Figure 6 yes Figure 5 A partial enlarged view of point B in the middle;

[0030] Figure 7 It is a schematic flow chart of the method of the present invention.

[0031] In the figure: cover plate 1, logging instrument 2, muffler plate 3, elastic pad 4, coupling tube 5, connecting seat 6, connecting column 7, movable wheel 8, convex block 9, adjusting rod 10, hand wheel 11, extension rod 12, arc block 13, fitting plate 14, spring 15, convex thorn 16, gas storage block 17, air pipe 1 18, volatilization box 19, opening 20, control ring 21, pressing piece 22, sealing sleeve 23, push rod 24, air pipe 2 25, heat exchange tube 26, heat dissipation sleeve 27, conduit 28. DETAILED DESCRIPTION

[0032] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0033] like Figures 1 to 6 As shown, the acoustic logging device for eliminating source signal interference of the present invention comprises a cover plate 1 and a logging instrument 2;

[0034] The upper side of the cover plate 1 is fixedly connected with a muffler plate 3 and a handle; the muffler plate 3 is made of a muffler material, such as sound-proof cotton, polyester fiber sound-absorbing board, sound-proof felt, polyurethane foam, etc.; the surface of the muffler plate 3 is designed to be honeycomb-shaped; the lower side of the cover plate 1 is fixedly connected with an elastic pad 4 and a coupling tube 5; the material of the elastic pad 4 can be rubber, silicone, etc.; the lower side of the coupling tube 5 is fixedly connected with a connecting seat 6;

[0035] The logging instrument 2 is arranged under the cover plate 1; a connecting column 7 is fixedly connected to the upper end of the logging instrument 2, and the connecting column 7 is inserted into the inside of the connecting seat 6 and threadedly connected thereto; the logging instrument 2 includes a signal transmitting module, a signal receiving module and a data processing module; the signal transmitting module is an acoustic wave transmitter, which serves as a seismic source; the signal receiving module is an acoustic wave receiver; the logging instrument 2 is a prior art and will not be described in detail here.

[0036] The logging instrument 2 in the prior art is set inside a pre-dug measuring well when in use. Various external noises can easily interfere with the source signal. For example, human activities, chirping of insects and birds, water flow, wind and rain, etc. will all produce certain noises, which will affect the emission and reception of sound waves, thereby reducing the measurement accuracy of the acoustic logging work.

[0037] When the present invention is in use, the connecting column 7 of the logging instrument 2 is first screwed into the connecting seat 6 of the cover plate 1 to fix the logging instrument 2 and the cover plate 1, and then the relevant lines are connected, the cover plate 1 is placed at the wellhead, and the logging instrument 2 is placed in the well. At this time, the cover plate 1 presses the elastic pad 4 against the ground to isolate the inside and outside of the well and reduce the impact of the outside on the equipment in the well. By setting a silencer, the noise generated by the surrounding environment is absorbed and weakened, and the silencer is designed to be honeycomb-shaped, which can further improve its sound insulation effect, avoid noise penetrating into the well, and prevent the problem of noise interfering with the source signal.

[0038] The present invention designs the cover plate 1 and the logging instrument 2 to be split, which is convenient for transportation and carrying. They can be installed by themselves when in use, and the installation process is simple and reliable. By arranging the elastic pad 4 and the silencer plate to cooperate with each other, the controllability of eliminating the interference of the seismic source signal is achieved. It is suitable for a variety of measurement environments, effectively reduces the interference of environmental noise on the transmission and reception of sound waves, and improves the measurement accuracy of acoustic logging.

[0039] As a preferred embodiment of the present invention, a movable wheel 8 is arranged inside the coupling cylinder 5; a group of protrusions 9 are evenly distributed on the side of the movable wheel 8; an adjusting rod 10 is fixedly connected to the upper side of the movable wheel 8, and the adjusting rod 10 passes through the cover plate 1 and is threadedly connected thereto; a hand wheel 11 is fixedly connected to the upper end of the adjusting rod 10; a group of protruding rods 12 are evenly distributed on the side of the coupling cylinder 5, and the protruding rods 12 pass through the side wall of the coupling cylinder 5 and are slidably connected thereto; an arc block 13 is fixedly connected to one end of the protruding rod 12 close to the movable wheel 8; a fitting plate 14 is fixedly connected to the other end of the protruding rod 12; a spring 15 is fixedly connected between the fitting plate 14 and the coupling cylinder 5. After the cover plate 1 and the logging instrument 2 are placed in place, the adjusting rod 10 is rotated by means of the hand wheel 11 to drive the movable wheel 8 to rotate inside the coupling tube 5 and move downward, and then the convex block 9 on the surface of the movable wheel 8 is used to squeeze the arc block 13, and the multiple protruding rods 12 are pushed outward at the same time, so that the bonding plate 14 is pressed against the surface of the well wall, thereby achieving fixation between the device and the measuring well, and keeping the logging instrument 2 centered, thereby improving the use effect of the device. When disassembly is required, the hand wheel 11 is rotated in the opposite direction, and the protruding rods 12 and the bonding plate 14 are retracted by means of the spring 15.

[0040] A group of thorns 16 are evenly distributed on one end of the bonding plate 14 away from the extension rod 12. By providing the thorns 16, when the bonding plate 14 moves outward, the thorns 16 can be inserted into the rock and soil inside the well wall to prevent the bonding plate 14 from sliding sideways with the well wall, thereby improving the fixation between the device and the measuring well.

[0041] As a preferred embodiment of the present invention, the interior of the elastic pad 4 is designed to be hollow; an elastic gas storage block 17 is fixedly connected to the interior of the coupling tube 5 at a position below the movable wheel 8; the interior of the elastic pad 4 and the gas storage block 17 are connected to each other through an air pipe 18. The movable wheel 8 squeezes the gas storage block 17 while rotating and moving downward inside the coupling tube 5, and squeezes the gas inside the gas storage block 17 into the interior of the elastic pad 4 through the air pipe 18, so that the elastic pad 4 is inflated and the gap between the elastic pad 4 and the ground is blocked, which improves the sound insulation effect of the device and reduces the interference of the external environment on the inside of the measuring well. On the other hand, it can prevent rainwater from pouring into the well through the gap between the elastic pad 4 and the ground when it rains, thereby extending the service life of the well logging instrument 2 and reducing the influence of water accumulation on the well logging work.

[0042] As a preferred embodiment of the present invention, a volatilization box 19 is fixedly connected to the upper side of the cover plate 1; irritating volatile substances, such as camphor, peppermint oil, wind oil, etc., are added inside the volatilization box 19; and a group of openings 20 are evenly distributed on the upper side of the volatilization box 19. By adding irritating volatile substances inside the volatilization box 19, during the acoustic well logging, the irritating substances volatilize outward through the openings 20 and diffuse into the surrounding environment, thereby dispersing nearby insects, birds, animals and other living things, further preventing their chirping and trampling sounds from interfering with the emission and reception of sound waves, and also preventing some larger animals from damaging the device.

[0043] A control ring 21 is fixedly connected inside the opening 20; a pressing piece 22 is arranged on the upper side of the control ring 21; a sealing sleeve 23 is fixedly connected inside the control ring 21; a push rod 24 is slidably and sealedly connected inside the sealing sleeve 23; an elastic member is arranged between the push rod 24 and the sealing sleeve 23; and the sealing sleeve 23 and the gas storage block 17 are connected to each other through the air pipe 25. When the device is not in use, the opening 20 is normally in a closed state to prevent the substance inside the volatilization box 19 from volatilizing and leaking outward, improve its utilization and reduce loss. During the installation and use process, the gas storage block 17 is squeezed by the movable wheel 8, and then the gas inside the gas storage block 17 enters the sealing sleeve 23 synchronously through the air pipe 25, and pushes the push rod 24 to move upward, so as to generate a gap between the pressing piece 22 and the control ring 21. At this time, the opening 20 is in an open state, and the irritating substance inside the volatilization box 19 can smoothly volatilize and escape through the opening 20.

[0044] As a preferred embodiment of the present invention, a heat exchange tube 26 is provided at the bottom of the volatilization box 19; an elastic heat dissipation sleeve 27 is provided on the outside of the well logging instrument 2; the heat dissipation sleeve 27 and the heat exchange tube 26 are connected to each other through a conduit 28; and coolant is stored inside the heat dissipation sleeve 27, the conduit 28 and the heat exchange tube 26. During installation, the well logging instrument 2 is passed through the heat dissipation sleeve 27 and fits with it, and then during the working process, the coolant inside the heat dissipation sleeve 27 is used to absorb the heat generated by the well logging instrument 2, thereby cooling down the electrical components inside the well logging instrument 2 and improving its working efficiency. In addition, the coolant can transfer the absorbed heat to the irritant substance inside the volatilization box 19 through the heat exchange tube 26, which can quickly reduce the temperature of the coolant on the one hand to improve its heat dissipation effect on the well logging instrument 2, and on the other hand, it can accelerate the volatilization speed of the irritant substance, thereby improving the efficiency of dispersing surrounding living things, and further ensuring the smooth progress of the well logging work.

[0045] The heat exchange tube 26 is designed to be wavy to increase the contact area between the heat exchange tube 26 and the irritating substance and extend the heat exchange path, thereby further improving the heat dissipation efficiency of the logging instrument 2 and the volatilization efficiency of the irritating substance.

[0046] like Figure 7 As shown, the acoustic logging method for eliminating the interference of the seismic source signal of the present invention adopts the above-mentioned acoustic logging device for eliminating the interference of the seismic source signal, and comprises the following steps:

[0047] S1: Screw the connection column 7 of the logging instrument 2 into the connection seat 6 of the cover plate 1 to realize the installation between the logging instrument 2 and the cover plate 1, then place the cover plate 1 at the wellhead and put the logging instrument 2 into the well;

[0048] S2: The adjusting rod 10 is rotated by the hand wheel 11 to drive the movable wheel 8 to rotate inside the coupling tube 5 and move downward, and the arc block 13 is squeezed by the convex block 9 to push the multiple extension rods 12 outward, so that the bonding plate 14 is pressed against the surface of the well wall;

[0049] S3: The movable wheel 8 squeezes the gas storage block 17, and squeezes the gas inside the gas storage block 17 into the elastic pad 4 through the air pipe 18, so that the elastic pad 4 is inflated and the gap between the elastic pad 4 and the ground is blocked;

[0050] S4: Start the logging tool 2 to perform acoustic logging;

[0051] S5: The irritant in the volatilization box 19 volatilizes outward through the opening 20 and diffuses into the surrounding environment, dispersing nearby animals to prevent animal activities from interfering with the acoustic logging work or damaging the equipment;

[0052] S6: The cooling liquid in the heat dissipation sleeve 27 absorbs the heat generated by the logging instrument 2 to cool down the electrical components in the logging instrument 2, and the cooling liquid transfers the heat to the irritating substance in the volatilization box 19 through the heat exchange tube 26, thereby reducing the temperature of the cooling liquid and accelerating the volatilization speed of the irritating substance.

[0053] Working principle: first screw the connection column 7 of the logging instrument 2 into the connection seat 6 of the cover plate 1 to fix the logging instrument 2 and the cover plate 1, then connect the relevant lines, place the cover plate 1 at the wellhead, and put the logging instrument 2 into the well. At this time, the cover plate 1 presses the elastic pad 4 on the ground to isolate the inside and outside of the well and reduce the impact of the outside on the equipment in the well. By setting the silencer, the noise generated by the surrounding environment is absorbed and weakened, and the silencer is designed to be honeycomb-shaped, which can further improve its sound insulation effect, avoid the problem of noise penetrating into the well and interfering with the source signal;

[0054] After the cover plate 1 and the well logging instrument 2 are placed in place, the adjusting rod 10 is rotated by the hand wheel 11 to drive the movable wheel 8 to rotate and move downward inside the coupling tube 5, and then the convex block 9 on the surface of the movable wheel 8 is used to squeeze the arc block 13, and multiple protruding rods 12 are pushed outward at the same time, so that the bonding plate 14 is pressed against the surface of the well wall, so as to achieve the fixation between the device and the measuring well, and keep the well logging instrument 2 centered, thereby improving the use effect of the device; the movable wheel 8 squeezes the gas storage block 17 while rotating and moving downward inside the coupling tube 5, and squeezes the gas inside the gas storage block 17 into the elastic pad 4 through the air pipe 18, so that the elastic pad 4 is inflated and the gap between the elastic pad 4 and the ground is blocked, which improves the sound insulation effect of the device and reduces the interference of the external environment on the inside of the measuring well. On the other hand, it can prevent rainwater from pouring into the well through the gap between the elastic pad 4 and the ground when it rains, thereby extending the service life of the well logging instrument 2 and reducing the influence of accumulated water on the well logging work;

[0055] By adding irritating volatile substances inside the volatilization box 19, during the acoustic logging, the irritating substances volatilize outward through the opening 20 and diffuse into the surrounding environment, thereby dispersing nearby insects, birds, animals and other living creatures, further preventing their chirping and trampling sounds from interfering with the emission and reception of sound waves, and also preventing some larger animals from damaging the device; when the device is not in use, the opening 20 is normally in a closed state to prevent the substances inside the volatilization box 19 from volatilizing and leaking outward, thereby improving its utilization and reducing loss. During installation and use, the gas storage block 17 is squeezed by the movable wheel 8, and then the gas inside the gas storage block 17 synchronously enters the sealing sleeve 23 through the air pipe 25, and pushes the push rod 24 to move upward, causing a gap to be generated between the pressing plate 22 and the control ring 21. At this time, the opening 20 is in an open state, and the irritating substances inside the volatilization box 19 can smoothly volatilize and escape through the opening 20;

[0056] During installation, the logging instrument 2 is passed through the heat dissipation sleeve 27 and fits therewith, and then during operation, the coolant inside the heat dissipation sleeve 27 is used to absorb the heat generated by the logging instrument 2, thereby cooling the electrical components inside the logging instrument 2 and improving its working efficiency. The coolant can transfer the absorbed heat to the irritating substance inside the volatilization box 19 through the heat exchange tube 26. On the one hand, the temperature of the coolant is quickly reduced to improve its heat dissipation effect on the logging instrument 2. On the other hand, the volatilization speed of the irritating substance can be accelerated, thereby improving the efficiency of dispersing surrounding living things and further ensuring the smooth progress of the logging work.

[0057] The above-mentioned front, back, left, right, top and bottom are all based on the figures in the specification. Figure 1 As a benchmark, according to the person's observation perspective, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0058] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the scope of protection of the present invention.

[0059] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An acoustic logging device for eliminating interference from seismic source signals, comprising a cover plate (1) and a logging instrument (2), wherein the logging instrument (2) comprises a signal transmitting module, a signal receiving module and a data processing module, and is characterized in that: The upper side of the cover plate (1) is fixedly connected to a muffler plate (3) and a handle, the surface of the muffler plate (3) is designed to be honeycomb-shaped, the lower side of the cover plate (1) is fixedly connected to an elastic pad (4) and a coupling tube (5), and the lower side of the coupling tube (5) is fixedly connected to a connecting seat (6); the well logging instrument (2) is arranged below the cover plate (1), the upper end of the well logging instrument (2) is fixedly connected to a connecting column (7), and the connecting column (7) is inserted into the interior of the connecting seat (6) and is threadedly connected thereto.

2. The acoustic logging device for eliminating source signal interference according to claim 1, characterized in that: A movable wheel (8) is arranged inside the coupling cylinder (5), a group of protrusions (9) are evenly distributed on the side of the movable wheel (8), an adjusting rod (10) is fixedly connected to the upper side of the movable wheel (8), and the adjusting rod (10) passes through the cover plate (1) and is threadedly connected thereto, a hand wheel (11) is fixedly connected to the upper end of the adjusting rod (10), a group of extension rods (12) are evenly distributed on the side of the coupling cylinder (5), and the extension rods (12) pass through the side wall of the coupling cylinder (5) and are slidably connected thereto, an arc block (13) is fixedly connected to one end of the extension rod (12) close to the movable wheel (8), and a fitting plate (14) is fixedly connected to the other end of the extension rod (12), and a spring (15) is fixedly connected between the fitting plate (14) and the coupling cylinder (5).

3. The acoustic logging device for eliminating source signal interference according to claim 2, characterized in that: A group of convex thorns (16) are evenly distributed on one end of the bonding plate (14) away from the outrigger rod (12).

4. The acoustic logging device for eliminating source signal interference according to claim 2, characterized in that: The interior of the elastic pad (4) is designed to be hollow, and an elastic air storage block (17) is fixedly connected to the interior of the coupling cylinder (5) below the movable wheel (8). The interior of the elastic pad (4) and the air storage block (17) are connected to each other through an air pipe (18).

5. The acoustic logging device for eliminating source signal interference according to claim 4, characterized in that: A volatilization box (19) is fixedly connected to the upper side of the cover plate (1), a stimulating volatile substance is added inside the volatilization box (19), and a group of openings (20) are evenly distributed on the upper side of the volatilization box (19).

6. The acoustic logging device for eliminating source signal interference according to claim 5, characterized in that: A control ring (21) is fixedly connected inside the opening (20), a pressing sheet (22) is arranged on the upper side of the control ring (21), a sealing sleeve (23) is fixedly connected inside the control ring (21), a push rod (24) is slidably and sealingly connected inside the sealing sleeve (23), an elastic member is arranged between the push rod (24) and the sealing sleeve (23), and the sealing sleeve (23) and the gas storage block (17) are connected to each other through a second air pipe (25).

7. The acoustic logging device for eliminating source signal interference according to claim 6, characterized in that: A heat exchange tube (26) is arranged at the bottom of the volatilization box (19), and an elastic heat dissipation sleeve (27) is arranged on the outside of the logging instrument (2). The heat dissipation sleeve (27) and the heat exchange tube (26) are connected to each other through a conduit (28), and cooling liquid is stored inside the heat dissipation sleeve (27), the conduit (28) and the heat exchange tube (26).

8. The acoustic logging device for eliminating source signal interference according to claim 7, characterized in that: The heat exchange tube (26) is designed to be wavy.

9. A sonic logging method for eliminating interference from seismic source signals, using the sonic logging device for eliminating interference from seismic source signals according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1: Screw the connection column (7) of the logging instrument (2) into the connection seat (6) of the cover plate (1) to realize the installation between the logging instrument (2) and the cover plate (1), then place the cover plate (1) at the wellhead, and put the logging instrument (2) into the well; S2: The adjusting rod (10) is rotated by means of a hand wheel (11), so as to drive the movable wheel (8) to rotate inside the coupling cylinder (5) and move downward, and the arc block (13) is pressed by means of the convex block (9), so as to push the plurality of extending rods (12) outward, so that the bonding plate (14) is pressed tightly against the surface of the well wall; S3: The movable wheel (8) squeezes the gas storage block (17), and the gas inside the gas storage block (17) is squeezed into the elastic pad (4) through the air pipe (18), so that the elastic pad (4) is inflated and the gap between the elastic pad (4) and the ground is sealed; S4: starting the logging tool (2) to perform acoustic logging; S5: The irritant substance inside the volatilization box (19) volatilizes outward through the opening (20) and diffuses into the surrounding environment, driving away nearby animals and preventing animal activities from interfering with the acoustic logging work or damaging the equipment; S6: The cooling liquid in the heat dissipation sleeve (27) absorbs the heat generated by the logging instrument (2) to cool down the electrical components in the logging instrument (2), and the cooling liquid conducts the heat to the irritating substance in the volatilization box (19) through the heat exchange tube (26), thereby reducing the temperature of the cooling liquid and accelerating the volatilization speed of the irritating substance.

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